Spring-hinge.



0. KATZENBERGER.

SPRING HINGE.

APPLICATION TILED JULY 24, 1913.

1,080,456. Patented Dec. 2, 1913.

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COLUMBIA PLANOGRAPH CO..WA$HINOTON, D. c

ATTORNEYS imrrnp STATE? PATENT orsion.

OSCAR KATZENBERGER, OF CHICAGO, ILLINOIS.

SPRING-HINGE.

To all whom it may concern Be it known that I, Oscar: Kivrznmninenn, acitizen of the United States, and a resident of Chicago, in the countyof Cook and State of Illinois, have invented a new and ImprovedSpring-Hinge, of which the following is a full, clear, and exactdescription.

This invention relates to improvements in spring hinges, and has for anobject to provide an improved structure in which one of the heads isconnected with the spring so as to wind the same, and is arranged withmeans for permitting a free rotation of the head While positivelypreventing any removal thereof.

In carrying out the object of the invention a hinge structure isprovided in which is arranged a spring connected to a head at one end ofthe hinge, said head being rigidly secured to one leaf of the spring. Atthe opposite end of the barrel of the hinge an adjusting head isprovided which is connected with a spring and which accommodates alocking ring. The locking ring is designed to fit into a notch in thehead, and also to overlap and fit into a notch in the barrel of thehinge, whereby the head cannot be removed without breaking the ring.

In the accompanying drawings-Figure 1 is a plan view of a hingeembodying the invention; Fig. 2 is a top plan view of the structureshown in Fig. 1; Fig. 3 is a section through Fi 2 on line 3-3, the samebeing shown on an enlarged scale; Fig. 4: is a section through Fig. 3approximately on line 4%; and Fig.- 5 is an enlarged detailedperspective view of the removable tension head.

Referring to the accompanying drawings by numeral 1 and 2 indicate theleaves of a hinge, the same being formed with loops 3 and 41 defining abarrel 5. The barrel 5 carries a sleeve 6 which acts as a pintle forholding the members 3 and 1 together, and for providing a proper bearingsurface therefor in order that the leaves may move back and forthfreely. At one end of the hinge a fixed head 7 is provided which issecured to loop 3 by a suitable pin 8. Head 7 is provided with aninwardly extending portion 9 having a notch in which one end of spring11 projects, whereby one end of the spring is held against movement. Theopposite end of spring 11 to that engaging notch 10 is adapted toproject into notch Specification of Letters Patent.

Application filed July 24, 1913.

Patented Dec. 2, .1913.

Serial No. 780,923.

12 in projection 13 formed on the adjusting head 14. When forming theadjusting head 14 the same is provided with any desired number ofopenings or pin receiving apertures 15. A locking pin 16 is providedwhich may be inserted in any of the openings or apertures 15 so as toprevent a reverse movement of the head, the pin 16 acting against leaf2.

When preparing the hinge for use after it has been mounted on a door orother article a pin or leverage device of any kind is inserted in any ofthe apertures 15 and the head 1 1 rotated to any desired extent so as tobring spring 11 under tension. After spring 11 has been in this mannerbrought under tension locking pin 16 is placed in position and the pinor lever which was used to rotate the head will then be removed.

In order to prevent head 14 from becoming disengaged the same isprovided with an extension 17 in which is formed an annular groove 18.This annular groove is designed to register with an annular groove 19formed in barrel 5. The annular groove 18 is designed to accommodate aspring ring 20 which is formed so as to project approxi mately half wayinto groove 18 under ordinary circumstanees, and to project into groove19 to the bottom thereof under ordinary circumstances so that head 1 1-.cannot be removed without breaking certain of the parts. In applying thehead 14L ring 20 is compressed so that it lies within groove 18 untilgroove 18 comes opposite groove 19, whereupon the spring 20 will. expandinto groove 19 and project a suliicient distance into groove 18 to lockhead 1 1 against removal. It will of course be evident that the head 18by reason of this structure cannot be removed but may freely rotate soas to bring spring 11 under tension after the hinge has been placed inposition or at any other time, as desired.

Having thus described my invention what I claim as new and desire tosecure by Letters Patent is- In a spring hinge of the class described, apair of leaves formed with knuckles or barrel portions, a pintle forholding said knuckles in alineinent, one of said knuckles having an.annular groove therein, a head rigidly secured to the knuckle on theopposite end of the pintle to the knnclde having the annular groove, aremovable head arranged in the end of the hinge having the annulargrooved knuckle, said last mentioned head being formed with an annulargroove, a spring connected with both of said heads adapted to give theheads a tendency to move in opposite directions, a split resilient ringarranged in the annular groove in said last mentioned head, said lastmentioned groove being of a suflicient depthfor accommodating the entirering, and the annular groove in said knuckle being of a depth toaccommodate substantially half of said ring, whereby when said ringexpands the same is limited by the bottom of said last mentioned groove,and said last mentioned head is prevented from being removed whilepermitting free rotation, and a locking member connected with said lastmentioned head acting on one of said leaves for holding said springunder tension.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing Witnesses.

OSCAR KATZENBERGER.

WVitnesses:

LE0 E. ZEOK, ADoLPI-I PAUsT.

Copies of this patent may be obtained for five eents each, by}addressing the Commissioner of Patents.

' Washington, D. C.

